TY - GEN A1 - Tortosa Valiente, Carlos KW - Innere Medizin UR - https://archiv.ub.uni-heidelberg.de/volltextserver/36048/ Y1 - 2024/// AV - public TI - Percutaneous transhepatic or endoscopic ultrasound guided biliary drainage in malignant distal bile duct obstruction using a self expanding metal stent : prospective European multicentre trial (PUMa trial) ID - heidok36048 ER -